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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "titanic/star_control/star_points2.h"
#include "titanic/star_control/star_camera.h"
#include "titanic/titanic.h"
namespace Titanic {
#define ARRAY_COUNT 80
const double FACTOR = 2 * M_PI / 360.0;
bool CStarPoints2::initialize() {
// Get a reference to the starfield points resource
Common::SeekableReadStream *stream = g_vm->_filesManager->getResource("STARFIELD/POINTS2");
_data.resize(ARRAY_COUNT);
for (int rootCtr = 0; rootCtr < ARRAY_COUNT; ++rootCtr) {
// Get the number of sub-entries for this entry
int count = stream->readUint32LE();
double v1, v2;
// Read in the sub-entries
RootEntry &rootEntry = _data[rootCtr];
rootEntry.resize(count);
for (int idx = 0; idx < count; ++idx) {
CStarPointEntry &se = rootEntry[idx];
FVector *vectors[2] = { &se._v1, &se._v2 };
for (int fctr = 0; fctr < 2; ++fctr) {
v1 = stream->readSint32LE();
v2 = stream->readSint32LE();
v1 *= 0.015 * FACTOR;
v2 *= FACTOR / 100.0;
vectors[fctr]->_x = cos(v1) * 3000000.0 * cos(v2);
vectors[fctr]->_y = sin(v1) * 3000000.0 * cos(v2);
vectors[fctr]->_z = sin(v2) * 3000000.0;
}
}
}
return true;
}
void CStarPoints2::draw(CSurfaceArea *surface, CStarCamera *camera) {
if (_data.empty())
return;
FPose pose = camera->getPose();
double threshold = camera->getThreshold();
FVector vector1, vector2, vector3, vector4;
double vWidth2 = (double)surface->_width * 0.5;
double vHeight2 = (double)surface->_height * 0.5;
FRect r;
surface->_pixel = 0xffff00;
uint oldPixel = surface->_pixel;
surface->setColorFromPixel();
SurfaceAreaMode oldMode = surface->setMode(SA_SOLID);
for (uint rootCtr = 0; rootCtr < _data.size(); ++rootCtr) {
const RootEntry &re = _data[rootCtr];
if (!re._field0 || re.empty())
continue;
for (uint idx = 0; idx < re.size(); ++idx) {
const CStarPointEntry &se = re[idx];
vector1._z = pose._row2._z * se._v1._y + pose._row3._z * se._v1._z
+ pose._row1._z * se._v1._x + pose._vector._z;
vector1._x = pose._row2._x * se._v1._y + pose._row3._x * se._v1._z
+ pose._row1._x * se._v1._x + pose._vector._x;
vector1._y = pose._row2._y * se._v1._y + pose._row3._y * se._v1._z
+ pose._row1._y * se._v1._x + pose._vector._y;
vector3._z = pose._row2._z * se._v2._y + pose._row2._x * se._v2._z
+ pose._row1._z * se._v2._x + pose._vector._y;
vector3._x = pose._row3._z * se._v2._y + pose._row3._x * se._v2._z
+ pose._row1._x * se._v2._x + pose._vector._y;
vector3._y = pose._row2._y * se._v2._y + pose._row3._y * se._v2._z
+ pose._row1._y * se._v2._x + pose._vector._y;
if (vector1._z > threshold && vector3._z > threshold) {
vector2 = camera->getRelativePos(2, vector1);
vector4 = camera->getRelativePos(2, vector3);
r.bottom = vector4._y + vHeight2;
r.right = vector4._x + vWidth2;
r.top = vector2._y + vHeight2;
r.left = vector2._x + vWidth2;
surface->drawLine(r);
}
}
}
surface->_pixel = oldPixel;
surface->setColorFromPixel();
surface->setMode(oldMode);
}
} // End of namespace Titanic
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